二者的基本用法一样
1) Be certain 如：Manchester are certain/sure to win.(The other team haven’t got a chance.)曼彻斯特队肯定会赢。(另一队连一点希望都没有)
2) Before the game stared, Alan felt quite sure/certain of winning, but after the first five minutes he began to lose confidence. 比赛开始前，艾伦感到很有把握赢，但比赛了5分钟后他开始失去信心了。
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一切都会好起来 It Will be Better
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挺希or挺特？1/4美国青年宁可地球毁灭
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做肝胆相照的好邻居、真朋友
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你的孩子希望你在社交媒体上停止做这三件事
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如果可以，把这些技能加入简历是极好的
狗狗的鼻子为什么总是湿的？
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女人不婚也幸福？！那要老公有卵用
别在下班后购物，下班后购物智商媲美脑残